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Numerical simulation of spin transport in systems with complex geometryстатья
- Авторы: Andrianov Timofey, Vedyayev Anatoly
- Журнал: EPJ Web of Conferences
- Том: 185
- Номер: 01021
- Год издания: 2018
- DOI: 10.1051/epjconf/201818501021
- Аннотация: The spin diffusion and charge equations in Levy-Fert and Waintal models were numerically solved, using finite element method in complex non-collinear geometry with strongly inhomogeneous current flow. As an illustration, spin-dependent transport through a magnetic pillar and nonmagnetic spacer separating two magnetic layers was investigated. It is shown, that the structure with number of pillars gives a higher value of Giant Magnetoresistance (GMR) effect rather than a structure with one pillar of equivalent diameter. The inhomogeneity of spin currents, which has one of the strongest impacts on GMR effect value leads to the occurrence of spin-current vortices. Introduction of lT and lL lengths in Waintal model gives a better description of angular dependence of GMR effect rather than Levy-Fert model.
- Добавил в систему: Андрианов Тимофей Андреевич